Based upon the angle-angle criterion for similarity of triangles, which of the following triangles are similar

Which of the following is the sum of 3 1/6 + 6 3/8?

Which angle of rotation is an angle of rotational symmetry for all figures?

Robert plans to make a box-and-whisker plot of the following set of data. 27, 14, 46, 38, 32, 18, 21 find the lower quartile, the median, and the upper quartile of the set? lower quartile: 19.5; median: 29.5; upper quartile: 42 lower quartile: 14; median: 27; upper quartile: 46 lower quartile: 18; median: 27; upper quartile: 38 lower quartile: 16; median: 29.5; upper quartile: 42